The KP File
Keratosis pilaris · What not to do
WHAT I GOT WRONG
5 things that made my keratosis pilaris worse
Four of these are the standard advice. The fifth is the one a doctor tells you, and it is roughly a coin flip. Each one below ends with what to do instead.
Every percentage named below is a strength in a formula, not a marketing word. The brands charging more call theirs a proprietary complex and never print the number.
First, what it is, because four of the five mistakes come from getting this wrong.
Each bump is a hair follicle with a plug of hardened keratin set in the opening, and the hair still coiled underneath. Not a pore. Not a spot. Not dirt. Around 40% of adults have it and up to 80% of teenagers, which is why the literature treats it as a variant of normal rather than a disease (StatPearls; AAD).
You may know it as chicken skin on the arms, or as strawberry legs after shaving. Same condition, same plug — two names, depending on where it turned up on you first.
You cannot scrub out something anchored below the surface.
Exfoliating gloves, scrubs and a dry brush.
This is the one everybody tries, because the skin feels rough and abrasion is what you do to rough things. It gives you about twenty minutes of smooth and a redder arm by evening.
Physical exfoliation takes the top off the bump and leaves the plug, because the plug is anchored below where a glove can reach. What it does reach is the skin around the follicle, which it inflames. The American Academy of Dermatology names scrubbing specifically: it irritates the skin and can make keratosis pilaris worse.
What to do instead
Wash and get out. Chemical, not physical - an acid that goes into the follicle opening does the job a glove cannot, and it does it without inflaming anything.
Long hot showers.
Hot water strips the oils that keep the skin around the follicle flexible. Dry skin sheds worse, not better, and the shed cells are the raw material of the next plug.
This is the quiet one. It does not feel like a treatment, so nobody counts it as one, and it happens every single day.
What to do instead
Shorter and cooler, and apply to skin that is dry rather than damp. The routine goes after the shower, not in it - anything that goes down the drain in thirty seconds has not had time to do anything.
Picking at them.
There is a plug in there and it feels like it should come out. It does not. There is nothing to squeeze - it is your own keratin, set hard, with the hair underneath it.
What picking does produce is an inflamed follicle, and an inflamed follicle leaves a mark that outlasts the bump you were attacking. That is how a texture problem turns into a colour problem that is still visible months later. Colour always lags texture, in both directions.
What to do instead
Keep your hands off it and give the marks something to work on. Niacinamide is in the formula below for exactly this part, and it is the slowest part to shift.
A body lotion with nothing in it.
This is the expensive mistake, because it looks like you are treating it.
The strength is the whole argument. Below 10% urea is a moisturiser. Between 10 and 30% it breaks keratin down (Piquero-Casals, 2021). In a placebo-controlled trial 20% urea cut water loss by 31% while 10% did not move it at all (Grether-Beck, 2012). A cream with 5% urea and the word smoothing on the front is not a gentler version of the same thing - it is a different thing, doing nothing to the plug.
Same for the acid. Fifty people with KP used 10% lactic acid on one arm and 5% salicylic on the other, twice daily: 41% fewer bumps at four weeks, 56% at eight, 66% at twelve (Kootiratrakarn, 2015). The number in front of the ingredient is doing the work.
What to do instead
Read the back of the bottle and find the percentage. If it is not printed, that is the answer.
Waiting for it to clear up with age.
This is the one you get told by someone who should know, and it is the reason people lose a decade to it.
Followed over time, only 35% of people improved. 43% stayed exactly the same, and 22% got worse (Poskitt & Wilkinson, 1994). That is not growing out of it. That is a coin flip that does not favour you, and two in three people lose it.
The honest framing is the one the AAD uses: keratosis pilaris is managed, not cured. It is genetic, the follicle keeps producing plugs, and stopping brings them back. Which is an argument for starting, not for waiting.
What to do instead
Treat it like shaving rather than like an illness. Something you keep on top of, twice a day, that takes two minutes.
Who this list was for.And who it honestly was not.
Written for
- Anyone who owns three exfoliating gloves and still has the bumps
- People told to just moisturise, at a four-minute appointment
- Anyone who picks at them and cannot stop
- People who read the ingredients list before the front of the bottle
Not written for
- Anyone who wants it gone this week. That is not a real number.
- People who want a cure. It is genetic. This keeps it clear.
The strengths are the whole argument
Every number is the strength in the formula, and every study named is a study on that ingredient. Nothing here claims KP-10 itself was put through a trial.
Do this tonight
The whole routine, for the record.
Put the exfoliating glove in the bin. Not in the cupboard.
Shower shorter and cooler. Wash, do not scrub.
Dry off, then apply a leave-on with the strengths printed on it - 15% urea, 10% lactic acid - morning and night, over the whole area rather than the bumps you can see.
Before you buy
If a product promises smooth arms in five days, that is a refund policy talking, not a formulator. Keratin rebuilds on a skin-cell cycle. Nothing beats the cycle — you dissolve the plug faster than your skin rebuilds it.
Ninety days, no questions.
Use the whole bottle. If nothing has changed, email us and we refund it. Nothing to send back.
Questions, answered
I have been scrubbing for years. Have I done permanent damage?
Mostly no. The marks left by inflamed follicles fade, they are just the slowest part - colour always lags texture. Stopping the scrubbing is the thing that lets them start fading.
Is this the same as the bumps on my legs?
Same condition. Backs of the upper arms, fronts of the thighs and the cheeks are where it turns up most, and on the legs after shaving people call it strawberry legs.
Will an acid sting?
At pH 3.5-4.0 you may feel it briefly on freshly shaved or already-raw skin. It is fragrance-free because roughly one in three people with KP also have eczema.
What happens if I stop?
The plugs come back over a few weeks. It is genetic and it is managed rather than cured, which is what the AAD says about every treatment for it.
Four of those five were free. They were also the problem.
$34.99, buy one get one free while it is running. 15% urea, 10% lactic acid, twice a day, no scrubbing. If nothing changes, email us within 90 days.
See KP-10 Corrector Cream →Or give it another year and take the 35% odds. Two people in three do not get them.
Sources
- Kootiratrakarn T, et al. Epidermal permeability barrier in the treatment of keratosis pilaris. Dermatol Res Pract. 2015.
- Grether-Beck S, et al. Urea uptake enhances barrier function and antimicrobial defense. J Invest Dermatol. 2012.
- Piquero-Casals J, et al. Urea in dermatology: a review. Dermatol Ther (Heidelb). 2021.
- Greenzaid J, et al. Treatment practices for keratosis pilaris among board-certified dermatologists. 2023.
- Poskitt L, Wilkinson JD. Natural history of keratosis pilaris. Br J Dermatol. 1994.
- American Academy of Dermatology - keratosis pilaris: diagnosis and treatment.
- StatPearls - Keratosis Pilaris. Prevalence and inheritance.
